I have a "4K Quad Core S812 M8S BCM4335"
It was Android version 4.4.2, I updated to 5.1 from a firmware on entertainmentbox.com.
Everything seemed to work fine, it updated, ran a mini set up, (wifi wasnt working but not important now) and was running fine.
I turned it off. Came back, plugged it back in, and nothing. Wouldnt even load the logo or anything. Blue screen on the TV downstairs, and "No signal" on the one upstairs. Different HDMI cables tested, different tv's, changed source and back again.
Tried a few other Firmwares including an old 4.2 one, but nothing gets it back to the logo screen, always just blank.
Left it for a couple hours on, nothing....
All out of ideas...
Any suggestions?
Thanks
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